Having a keyboard issue with laptop.  Keys on the a-' row don't work.  Replaced keyboard and havinf similar problem.  Ran Dell HW diags and keyboard fails the key press test at the F7 key.  computer works fine with USB keyboard.  I have updated the bios to the 2.6.3 bios on the support web site.  Laptop is Inspiron 1501 with Sempron processor.  Am I looking at a MB issue?

Thanks,

Steve